/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.extpipe;

import org.apache.iotdb.pipe.external.api.ExternalPipeSinkWriterStatus;
import org.apache.iotdb.pipe.external.api.IExternalPipeSinkWriter;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class ExtPipeSinkWriterImpl implements IExternalPipeSinkWriter {
    private Map<String, String> sinkParams;
    // private ExtSession extSession;   //maintain the connect to ext DB system
    private long startTime;

    public ExtPipeSinkWriterImpl(Map<String, String> sinkParams) {
        this.sinkParams = sinkParams;
    }

    /**
     * IoTDB call this method to initialize 1 IExternalPipeSinkWriter instance.
     */
    @Override
    public void open() {
        // == Use the parameters in sinkParams to start 1 session to ext DB system
        // extSession = new ExtSession(sinkParams);

        // == Record the start-time of current external session.
        startTime = System.currentTimeMillis();
    }

    @Override
    public void insertBoolean(String sgName, String[] path, long timestamp, boolean value)
            throws IOException {
        // == Here, handle inserted Boolean type data from IoTDB.
        // extSession.insertBoolean(...);
        // ...
    }

    @Override
    public void insertInt32(String sgName, String[] path, long timestamp, int value)
            throws IOException {
        // == Here, handle inserted Int32 type data from IoTDB.
        // extSession.insertInt32(...);
        // ...
    }

    @Override
    public void insertInt64(String sgName, String[] path, long time, long value) throws IOException {
        // == Here, handle inserted Int64 type data from IoTDB.
        // ...
    }

    @Override
    public void insertFloat(String sgName, String[] path, long time, float value) throws IOException {
        // == Here, handle inserted float type data from IoTDB.
        // extSession.insertFloat(...);
        // ...
    }

    @Override
    public void insertDouble(String sgName, String[] path, long time, double value)
            throws IOException {
        // == Here, handle inserted double type data from IoTDB.
        // extSession.insertDouble(...);
        // ...
    }

    @Override
    public void insertText(String sgName, String[] path, long time, String value) throws IOException {
        // == Here, handle inserted Text type data from IoTDB.
        // extSession.insertText(...);
        // ..
    }

    @Override
    public void delete(String sgName, String delPath, long startTime, long endTime)
            throws IOException {

        // == Here, handle delete operation.
        // extSession.delete(...);
        // ...
    }

    //  @Override
    //  public void createTimeSeries(String[] path, DataType dataType) {
    //    //== Here, handle create TimeSeries operation.
    //    //extSession.createTable(...);
    //    //...
    //  }
    //
    //  @Override
    //  public void deleteTimeSeries(String[] path) {
    //    //== Here, handle delete TimeSeries operation.
    //    //extSession.deleteTable(...);
    //    //...
    //  }

    /**
     * IoTDB call this method to flush data in plugin buf to external DB system, if data buf exist.
     *
     * @throws IOException
     */
    @Override
    public void flush() throws IOException {
        // extSession.flush(...);
        // ...
    }

    /**
     * When run CMD "stop pipe ..." or "drop pipe ..." , IoTDB will call this method to close
     * connection to external DB system.
     *
     * @throws IOException
     */
    @Override
    public void close() throws IOException {
        flush();

        // == Close connection to external DB system.
        // extSession.close(...);
    }

    /**
     * /** IoTDB use this method to collect statistic info of 1 ExternalPipeSinkWriter. When run CMD
     * "show pipes", the statistic information will be show.
     *
     * @return
     */
    @Override
    public ExternalPipeSinkWriterStatus getStatus() {
        ExternalPipeSinkWriterStatus status = new ExternalPipeSinkWriterStatus();

        // == set basic statistic info
        status.setStartTime(startTime); // ExternalPipeSinkWriter's beginning time
        // status.setNumOfRecordsTransmitted(extSession.getNumOffRecords());
        // status.setNumOfBytesTransmitted(extSession.getNumOfBytes());

        // == Here, customer may define & add other information.
        Map<String, String> extendedFields = new HashMap<>();
        // extendedFields.put("AverageSpeed", Long.toString(extSession.getAvgSpeed());
        // extendedFields.put("Speed", Long.toString(extSession.getSpeed()));
        // extendedFields.put("SessionId", extSession == null ? "N/A" : extSession.getId());
        status.setExtendedFields(extendedFields);

        return status;
    }
}
